Lock.



Patented Aug. 29, I899.

c. E. YEAGER.

LOCK.

(Application filed Apr. 19, 1899.

(No Model.)

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1 PETERS cu. PNOTUJTNQ, wAsnma-rcu. b. c.

UNITED STATES- PATENT OFFICE;

CHARLES E. YEAGER, OF PRAIRIE CREEK, IND IANA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 631,918, dated August 29, 1899.

Application filed April 19,1899. Serial No. 713,586. (No model.)

To (M whom, it may concern:

Be it known that I, CHARLES E. YEAGER, a citizen of the United States, residing at Prairie-Creek, in the county of Vigo and State of Indiana, have invented certain new and useful Improvements in Springless Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art towhich it appertains to make and use the same.

My invention relates to improvements in side or mortise door-locks, and more particularly to that class in which the usual springs for actuating the bolt and latch mechanism are replaced by weights; and the object is to simplify and improve the construction and provide an efficient durable lock of this character.

To this end the invention consists in the construction, combination, and arrangement of the several elements of the device, as will be hereinafter more fully described, and particularly pointed out in the claim.

In the accompanying drawings the same reference characters indicate the same parts of the invention.

Figure 1 is a transverse section of a lock embodying my invention. Fig. 2 is a front elevation with the lock-plate removed. Fig. 3 is a detail perspective view of the reversible latch and its coupling-pin. lar View of the front end of the counterbalance-weight. Fig. 5 is a perspective view of the key. Fig. 6 is a detail view, partly in section and partly in perspective, to show certain details of the bolt mechanism.

In the drawings, 1 denotes the lock-case, and 2 the lock-plate. The case is formed with the flange 3, integral guide-guard 4:, and integral ward 5, and the plate 2 is similarly provided with a counterpart and alined guideguard 4 and a ward, the latter not being shown.

6 denotes the bolt, which has a sliding engagement with the orifice 3' in the flange and the guardse l, and it is provided with a transverse shoulder 7, which limits its forward movement, and an angular shoulder 7, which abuts against the guards and limits its movement in the opposite direction. The central port-ion of the bolt 6 consists of an attenuated longitudinal rib 6', on the sides of which are Fig. 4 is a simi= formed the vertical parallel dovetailed guidegrooves 6 6 to receive the correspondinglyformed rectangular gravity-tumblers S 8, the lower ends of which terminate in the teats 8 8, which extend on either side of the wards 5 5',

according to the position of the bolt, and lock it in either position.

9 denotes the key, the bit of which is formed with a recess 10 to clear the bolt-rib 6, and

the projecting ends 11 11 of the bit come in contact with the cross-bars S 8 of the tum- -blers to raise them, so that the teats will clear the fixed wards, thus permitting the bolt to the flanges 13 of which are each provided with an orifice 13 to receive the coupling-pin 14, according to the position of thelatch. The coupling-pin 14 is formed with a longitudinal offset extension-stud 14, which engages the orifice 15 in the lip 15, formed on the counterbalance-weight 15, fulcrumed on the studscrew 16, which secures the plate 2 to the lockcase. The fulcrum-orifice -15 of the weight is square, as shown, to receive the correspondingly-formed socket 16, which encompasses the screw 16, and by removing this socket 16 and placing the screw in another unoccupied position in the lock the ordinary square shank and knobs (not shown) may be employed. The forward "end of the weight 15 is formed with a horizontal arm 15, which projects into the path of the lapping fingers 17 of the triggers 17, fulcrumed in the pistol-grip handles 18, removably secured in the escutcheon-plates 19 19, fixed on the door on opposite sides of the lock and so arranged that in grasping either handle the trigger is pressed in to raise the weight and retract the latch. The lower edge 19' of the orifice 19 in the escutcheonplate 19 is undercut, as shown, to receive the correspondingly-formed shoulder 18 of the handle, while the upper shoulder 18 is square to receive the correspondingly-i'ormed upper edge 19 of the plate.

18 denotes an undercut lip formed on the handle, and 10 a similar'lip formed on the inner face of the escutcheon-plate, and denotes a tapering dovetailed key, which is inserted between the lips 18 and 19 to lock theparts together.

It Will of course be understood that various changes in the form, proportion, and the minor details of construction may be resorted to without departing fromthe principle or sacrificing any of the advantages of this ini vention.

Having thus described the invention, what is claimed, and desired to be secured by Letters Patent, is- 1 In combination, the lock-case 1 provided with the bolt-orifice 3, integral guide=guard 4 and ward 5, the bolt 6 having a sliding en- 1 .set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

CHARLES E. YEAGER. Witnesses:

GEORGE LIs'roN, OLIVER L. WILSON. 

